{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:QENKQX4NCH7SICZSRGZCDMSN3D","short_pith_number":"pith:QENKQX4N","canonical_record":{"source":{"id":"1606.04367","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-14T13:48:00Z","cross_cats_sorted":[],"title_canon_sha256":"8cba493817fb1c96d7d05a3d697171f42bba72aa27817e0ad78b10f0ee1d77c9","abstract_canon_sha256":"9b58d14ba4b27dfcbfee22853affe545348b7e28d9677ef98d918b1551e16056"},"schema_version":"1.0"},"canonical_sha256":"811aa85f8d11ff240b3289b221b24dd8cfd8f15b44d10877fff12b3bb8129830","source":{"kind":"arxiv","id":"1606.04367","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.04367","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"arxiv_version","alias_value":"1606.04367v1","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.04367","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"pith_short_12","alias_value":"QENKQX4NCH7S","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"QENKQX4NCH7SICZS","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"QENKQX4N","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:QENKQX4NCH7SICZSRGZCDMSN3D","target":"record","payload":{"canonical_record":{"source":{"id":"1606.04367","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-14T13:48:00Z","cross_cats_sorted":[],"title_canon_sha256":"8cba493817fb1c96d7d05a3d697171f42bba72aa27817e0ad78b10f0ee1d77c9","abstract_canon_sha256":"9b58d14ba4b27dfcbfee22853affe545348b7e28d9677ef98d918b1551e16056"},"schema_version":"1.0"},"canonical_sha256":"811aa85f8d11ff240b3289b221b24dd8cfd8f15b44d10877fff12b3bb8129830","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:23.544055Z","signature_b64":"HeVxMyClvdvvN2jW7JKzvySKjWmw5Xr22HxNHRfadVAIG3fEILZZadkG5Ojw6FH6vhVQAk1Zc5X2uTuGERoPCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"811aa85f8d11ff240b3289b221b24dd8cfd8f15b44d10877fff12b3bb8129830","last_reissued_at":"2026-05-18T01:01:23.543604Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:23.543604Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.04367","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:01:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ifUMR4j5oGuZMeaHd3vie9FwPAJKPPe2p/B355Vws6iRk8Jn1A/J/wFHd5pz27GWMiXwXgeZCnUdfn6A4FIxAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T05:44:13.459940Z"},"content_sha256":"71482c774dd093885135aed2d76ea83ee04d491be36126a65537ae883d6f774c","schema_version":"1.0","event_id":"sha256:71482c774dd093885135aed2d76ea83ee04d491be36126a65537ae883d6f774c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:QENKQX4NCH7SICZSRGZCDMSN3D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pulsations powered by hydrogen shell burning in white dwarfs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alejandro H. C\\'orsico, Hiromoto Shibahashi, Leandro G. Althaus, Mar\\'ia E. Camisassa","submitted_at":"2016-06-14T13:48:00Z","abstract_excerpt":"In the absence of a third dredge-up episode during the asymptotic giant branch phase, white dwarf models evolved from low-metallicity progenitors have a thick hydrogen envelope, which makes hydrogen shell burning be the most important energy source. We investigate the pulsational stability of white dwarf models with thick envelopes to see whether nonradial $g$-mode pulsations are triggered by hydrogen burning, with the aim of placing constraints on hydrogen shell burning in cool white dwarfs and on a third dredge-up during the asymptotic giant branch evolution of their progenitor stars. We con"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.04367","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:01:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DbWFGrI1B7qUPZ5GtKV3oy+aykqcz7IQnOaxEjfoAx0qR8qI8twJRxRUHV51Z4sGWY7nSfSWevCB9dQh5vybDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T05:44:13.460353Z"},"content_sha256":"cfda8e991eedae8a207a069c0123933092fc19bc6c5aece881b522decd34e91c","schema_version":"1.0","event_id":"sha256:cfda8e991eedae8a207a069c0123933092fc19bc6c5aece881b522decd34e91c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QENKQX4NCH7SICZSRGZCDMSN3D/bundle.json","state_url":"https://pith.science/pith/QENKQX4NCH7SICZSRGZCDMSN3D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QENKQX4NCH7SICZSRGZCDMSN3D/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-28T05:44:13Z","links":{"resolver":"https://pith.science/pith/QENKQX4NCH7SICZSRGZCDMSN3D","bundle":"https://pith.science/pith/QENKQX4NCH7SICZSRGZCDMSN3D/bundle.json","state":"https://pith.science/pith/QENKQX4NCH7SICZSRGZCDMSN3D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QENKQX4NCH7SICZSRGZCDMSN3D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:QENKQX4NCH7SICZSRGZCDMSN3D","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"9b58d14ba4b27dfcbfee22853affe545348b7e28d9677ef98d918b1551e16056","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-14T13:48:00Z","title_canon_sha256":"8cba493817fb1c96d7d05a3d697171f42bba72aa27817e0ad78b10f0ee1d77c9"},"schema_version":"1.0","source":{"id":"1606.04367","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.04367","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"arxiv_version","alias_value":"1606.04367v1","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.04367","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"pith_short_12","alias_value":"QENKQX4NCH7S","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"QENKQX4NCH7SICZS","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"QENKQX4N","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:cfda8e991eedae8a207a069c0123933092fc19bc6c5aece881b522decd34e91c","target":"graph","created_at":"2026-05-18T01:01:23Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"In the absence of a third dredge-up episode during the asymptotic giant branch phase, white dwarf models evolved from low-metallicity progenitors have a thick hydrogen envelope, which makes hydrogen shell burning be the most important energy source. We investigate the pulsational stability of white dwarf models with thick envelopes to see whether nonradial $g$-mode pulsations are triggered by hydrogen burning, with the aim of placing constraints on hydrogen shell burning in cool white dwarfs and on a third dredge-up during the asymptotic giant branch evolution of their progenitor stars. We con","authors_text":"Alejandro H. C\\'orsico, Hiromoto Shibahashi, Leandro G. Althaus, Mar\\'ia E. Camisassa","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-14T13:48:00Z","title":"Pulsations powered by hydrogen shell burning in white dwarfs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.04367","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:71482c774dd093885135aed2d76ea83ee04d491be36126a65537ae883d6f774c","target":"record","created_at":"2026-05-18T01:01:23Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"9b58d14ba4b27dfcbfee22853affe545348b7e28d9677ef98d918b1551e16056","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-06-14T13:48:00Z","title_canon_sha256":"8cba493817fb1c96d7d05a3d697171f42bba72aa27817e0ad78b10f0ee1d77c9"},"schema_version":"1.0","source":{"id":"1606.04367","kind":"arxiv","version":1}},"canonical_sha256":"811aa85f8d11ff240b3289b221b24dd8cfd8f15b44d10877fff12b3bb8129830","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"811aa85f8d11ff240b3289b221b24dd8cfd8f15b44d10877fff12b3bb8129830","first_computed_at":"2026-05-18T01:01:23.543604Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:23.543604Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HeVxMyClvdvvN2jW7JKzvySKjWmw5Xr22HxNHRfadVAIG3fEILZZadkG5Ojw6FH6vhVQAk1Zc5X2uTuGERoPCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:23.544055Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.04367","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71482c774dd093885135aed2d76ea83ee04d491be36126a65537ae883d6f774c","sha256:cfda8e991eedae8a207a069c0123933092fc19bc6c5aece881b522decd34e91c"],"state_sha256":"b4616760eb8b1584ee10ad6121aa5ef99aa1684b51d4ee36f2664996bcf2a8ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EjKctKfufV4OeD8jHwJ2hZeqnuYNiDcgZVxSvgBvw875KdCJxDxXCEe0bx96WdqAK4HYzvPh6Bb9Qw23M2TTBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T05:44:13.462524Z","bundle_sha256":"0531b2c2ab45db393fb90b5b296a44843f82bc4b29faec48699d6b26653d618f"}}